1. You can use the ImageProvider to create a custom Map Provider when you should display a single region for different zoom levels.
2. Unfortunately we don't have a sample code of this custom provider. You can build it using the following example for tiled provider: http://www.telerik.com/help/wpf/radmap-howto-custom-provider.html
But you should inherit ImageProvider and ImageMapSource classes instead of TiledProvider and TiledMapSource. Also you should override the ImageMapSource.GetImageSource method instead of GetTile.
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